加入任务队列，在 100 连接数的情况下，能支持大于 100 的并发

README.md

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+Memcached 异步客户端 for tornado
+===================================
+
+### demo:
+
+```python
+import tornado.ioloop
+import tornado.web
+import tornado.gen as gen
+import tornadoasyncmemcache as memcache
+import time
+
+ccs = memcache.ClientPool(['127.0.0.1:11211'], maxclients=100)
+
+
+class MainHandler(tornado.web.RequestHandler):
+
+    @tornado.web.asynchronous
+    @gen.engine
+    def get(self):
+        test_data = yield gen.Task(ccs.get, 'test_data')
+        if not test_data:
+            time_str = time.strftime('%Y-%m-%d %H:%M:%S')
+
+            yield gen.Task(ccs.set, 'test_data', 'Hello world @ %s' % time_str)
+            test_data = yield gen.Task(ccs.get, 'test_data')
+
+        self.write(test_data)
+        self.finish()
+
+
+application = tornado.web.Application([
+    (r"/", MainHandler),
+], debug=False)
+
+if __name__ == "__main__":
+    application.listen(8888)
+    tornado.ioloop.IOLoop.instance().start()
+```
+
+### 更新记录：
+
+- 加入任务队列，在 100 连接数的情况下，能支持大于 100 的并发
+
+> `ab -n 3000 -c 1000 http://127.0.0.1:8888/` 测试通过

test.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# @Date: 2013-10-12 17:39:33
+# @Author: vfasky (vfasky@gmail.com)
+# @Link: http://vfasky.com
+# @Version: $Id$
+
+import tornado.ioloop
+import tornado.web
+import tornado.gen as gen
+import tornadoasyncmemcache as memcache
+import time
+
+ccs = memcache.ClientPool(['127.0.0.1:11211'], maxclients=100)
+
+
+class MainHandler(tornado.web.RequestHandler):
+
+    @tornado.web.asynchronous
+    @gen.engine
+    def get(self):
+        test_data = yield gen.Task(ccs.get, 'test_data')
+        if not test_data:
+            time_str = time.strftime('%Y-%m-%d %H:%M:%S')
+
+            yield gen.Task(ccs.set, 'test_data', 'Hello world @ %s' % time_str)
+            test_data = yield gen.Task(ccs.get, 'test_data')
+
+        self.write(test_data)
+        self.finish()
+
+
+application = tornado.web.Application([
+    (r"/", MainHandler),
+], debug=False)
+
+if __name__ == "__main__":
+    application.listen(8888)
+    tornado.ioloop.IOLoop.instance().start()